CN214951053U

CN214951053U - Projectile body internal diameter measuring device

Info

Publication number: CN214951053U
Application number: CN202121396366.7U
Authority: CN
Inventors: 高育红; 张彧; 权铁松; 王海津; 冯少平
Original assignee: Chongqing Yimin Machinery Engineering Co ltd
Current assignee: Chongqing Yimin Machinery Engineering Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-11-30
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to a measuring device for the inner diameter of a projectile body, which comprises a measuring workbench; a positioning column is arranged on the measuring workbench; the positioning column is arranged in a hollow manner; contact blocks are arranged on the two symmetrical sides of the positioning column; the contact block is connected with the side wall of the positioning column through the shaft body; the shaft body is sleeved with a torsion spring; the two shaft bodies are respectively provided with a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are hinged with each other; the bottoms of the first connecting rod and the second connecting rod are provided with positioning mechanisms; the first connecting rod is contacted with or separated from the positioning mechanism. Even if the projectile body is upwards taken out, the angles of the two contact blocks are fixed, the length between the two contact blocks is convenient to measure, the inner diameter is determined, the whole process is realized through mechanization, the reliability is high, and the cost is low.

Description

Projectile body internal diameter measuring device

Technical Field

The utility model relates to a measuring device, concretely relates to projectile body internal diameter measuring device belongs to projectile body test fixture technical field.

Background

The bullet body, also called a cartridge case, is a cylinder for covering the bullet and is generally connected with the bullet in a press-fitting manner during the assembly process. Therefore, the inner diameter of the bullet directly determines whether the bullet can be tightly assembled with the bullet, if the inner diameter of the bullet exceeds the standard, a gap can be formed between the bullet and the bullet, the bullet is easy to loosen, and the conditions that the ejection accuracy of the bullet is lowered and the inside of the bullet is easily affected with damp can be caused; at present, carry out the spot check to the body internal diameter and generally all can adopt the mode of grating detection, this kind of mode needs arrange the probe in the body, but because the particularity of body, its size is little, and general equipment is difficult to put into wherein, leads to adopting photoelectric detection's mode all comparatively difficult. Therefore, further improvements are awaited.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an overcome the defect among the prior art, provide a body internal diameter measuring device, reliable and stable, convenient operation, it is not fragile, firmly durable, simple structure is reasonable, and concrete scheme is as follows:

a device for measuring the inner diameter of a projectile body comprises a measuring workbench; a positioning column is arranged on the measuring workbench; the positioning column is arranged in a hollow manner; contact blocks are arranged on the two symmetrical sides of the positioning column; the contact block is connected with the side wall of the positioning column through the shaft body; the shaft body is sleeved with a torsion spring; the two shaft bodies are respectively provided with a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are hinged with each other; the bottoms of the first connecting rod and the second connecting rod are provided with positioning mechanisms; the first connecting rod is contacted with or separated from the positioning mechanism; a pressing block is arranged on the outer side of the positioning column; a push rod is arranged on the inner side of the pressing block; the other end of the push rod is contacted with or separated from the positioning mechanism; a stop block is arranged on the measuring workbench; the bottom of the pressing block is provided with a plurality of positioning notches.

Preferably, the body to be measured is sleeved outside the positioning column; the contact block is abutted against the inner side wall of the bullet to be tested; the contact block is a rectangular block.

Preferably, the first connecting rod is provided with a bar hole; the single side of the strip hole is provided with an opening; one side of the second connecting rod is rotatably connected in the strip hole.

Preferably, the positioning mechanism comprises a top rod and a wedge block; guide holes are formed in two sides of the wedge block; the bottom of the positioning column is provided with a guide column; the guide hole is sleeved on the outer side of the guide post.

Preferably, the ejector rod is arranged at the center of the upper surface of the wedge-shaped block; wedge surfaces are arranged on two sides of the wedge block; the upper end of the top rod is contacted with or separated from the bottom of the first connecting rod.

Preferably, the side wall of the positioning column is provided with a through hole relative to the push rod; a return spring is arranged between the pressing block and the side wall of the positioning column; the end of the push rod is contacted with or separated from the wedge block.

Preferably, the positioning notches are uniformly distributed at the bottom of the pressing block; the measuring workbench is provided with a groove; the stop block is connected in the groove through a spring.

In the utility model, the projectile body is sleeved outside the positioning column, in the moving down process of the projectile body, the side wall of the projectile body can contact and abut against the contact block, so that the contact block is angularly changed, because the inner wall of the projectile body is straight, the angle of the projectile body can not be changed after the projectile body moves to the lowest position, and the distance between the two contact blocks is the inner diameter of the projectile body; simultaneously, after the body of bullet removed to the lowest position, for inwards promoting the briquetting, the briquetting can drive the push rod and inwards remove, after contacting with the wedge, upwards promote the wedge for ejector pin top and first connecting rod contact, and the horizontal position of briquetting is then fixed through the backstop piece, because the angle of first connecting rod is fixed by the ejector pin, consequently, even upwards take out the body of bullet, the angle of two contact blocks will also be fixed unchangeable, be convenient for measure the length between the two, confirm the internal diameter, whole process is through mechanized realization, high reliability, and the cost is lower.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is an enlarged view of part a.

Fig. 3 is a schematic cross-sectional view of another state.

Fig. 4 is a schematic structural view of the second link.

In the figure, 1 is a measuring workbench, 2 is a positioning column, 3 is a contact block, 4 is a shaft body, 5 is a first connecting rod, 6 is a second connecting rod, 7 is a pressing block, 8 is a push rod, 9 is a stop block, 10 is a push rod, 11 is a wedge-shaped block, 12 is a guide column, 13 is a return spring, 1.1 is a groove, 5.1 is a strip hole, 7.1 is a positioning notch, and 11.1 is a guide hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.

Referring to fig. 1-3, an inner diameter measuring device for a projectile body comprises a measuring workbench 1; a positioning column 2 is arranged on the measuring workbench 1; the positioning column 2 is arranged in a hollow manner; contact blocks 3 are arranged on two symmetrical sides of the positioning column 2; the contact block 3 is connected with the side wall of the positioning column 2 through a shaft body; the shaft body 4 is sleeved with a torsion spring; a first connecting rod 5 and a second connecting rod 6 are respectively arranged on the two shaft bodies 4; the first connecting rod 5 and the second connecting rod 6 are hinged with each other; the bottoms of the first connecting rod 5 and the second connecting rod 6 are provided with positioning mechanisms; the first connecting rod 5 is contacted with or separated from the positioning mechanism; a pressing block 7 is arranged on the outer side of the positioning column 2; a push rod 8 is arranged on the inner side of the pressing block 7; the other end of the push rod 8 is contacted with or separated from the positioning mechanism; a stop block 9 is arranged on the measuring workbench 1; the bottom of the pressing block 7 is provided with a plurality of positioning notches 7.1.

Furthermore, the body to be measured is sleeved outside the positioning column 2; the contact block 3 is abutted against the inner side wall of the bullet to be tested; the contact block 3 is a rectangular block.

Specifically, in this embodiment, during the use with the body cover of awaiting measuring establish outside reference column 2, along with the pushing down of the body of awaiting measuring, it can extrude contact block for contact block 3 takes place the upset, because the body inside of awaiting measuring is straight, consequently, contact block 3's angle can keep unanimous, can not change, insert to the lower (on the workstation of awaiting measuring) until the body of awaiting measuring

Further, the first connecting rod 5 is provided with a strip hole 5.1; the single side of the strip hole is provided with an opening; one side of the second connecting rod 6 is rotatably connected in the strip hole.

Furthermore, the positioning mechanism comprises a mandril 10 and a wedge block 11; guide holes 11.1 are formed in two sides of the wedge block 11; the bottom of the positioning column is provided with a guide column 12; the guide hole 11.1 is sleeved outside the guide post 12.

Specifically, in this embodiment, after the body of bullet that awaits measuring inserts to the lower extreme, it can inwards extrude the briquetting for the briquetting drives the push rod and inwards removes, along with push rod inwardly moving, can upwards extrude the wedge, finally makes ejector pin and first connecting rod contact, makes it unable to reset, keeps contact piece 3's angle unchangeable.

It should be noted that, if the inner diameter of the body to be measured is small, the angle between the two contact blocks will be small, and the vertical position of the end of the first connecting rod will be high; and the stroke of the pressing block which is pressed inwards is larger, and the distance of upward movement of the ejector rod is further, so that the ejector rod can still abut against the bottom of the first connecting rod. The device is suitable for the bullets with various inner diameter sizes.

Further, the ejector rod 10 is arranged at the center of the upper surface of the wedge block 11; two sides of the wedge block 11 are provided with wedge surfaces; the upper end of the top rod 10 is contacted with or separated from the bottom of the first connecting rod 5.

Furthermore, the side wall of the positioning column 2 is provided with a through hole relative to the push rod 8; a return spring 13 is arranged between the pressing block 7 and the side wall of the positioning column; the end of the push rod 8 is in contact with or separated from the wedge block 11.

Furthermore, the positioning notches 7.1 are uniformly distributed at the bottom of the pressing block 7; the measuring workbench is provided with a groove 1.1; the stop block 9 is connected in the groove through a spring.

Specifically, in the present embodiment, when no measurement is performed, the stop block abuts the pressing block against the outside; in the lateral quantity process, the backstop piece is pushed down, and the briquetting can be in the free motion on the horizontal direction, along with the pushing down of the body of bullet, the body of bullet contacts with the outer inclined plane of briquetting, inwards promotes the briquetting motion, moves down to the measurement table surface until the body of bullet, at this moment, because the briquetting bottom has a plurality of location breachs, because the effect of spring, the backstop piece can upwards bounce, inserts to the ascending location breach in the vertical direction in, prescribes a limit to the horizontal position of briquetting. After the briquetting rigidity, can ensure that the ejector pin is in fixed level, because the support of ejector pin, can ensure the fixed of two contact block angles, even take off the elastomer this moment, the contact block still is in fixed angle, measurement that can be convenient.

Finally, it is noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a projectile body internal diameter measuring device which characterized in that: comprises a measuring workbench; a positioning column is arranged on the measuring workbench; the positioning column is arranged in a hollow manner; contact blocks are arranged on the two symmetrical sides of the positioning column; the contact block is connected with the side wall of the positioning column through the shaft body; the shaft body is sleeved with a torsion spring; the two shaft bodies are respectively provided with a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are hinged with each other; the bottoms of the first connecting rod and the second connecting rod are provided with positioning mechanisms; the first connecting rod is contacted with or separated from the positioning mechanism; a pressing block is arranged on the outer side of the positioning column; a push rod is arranged on the inner side of the pressing block; the other end of the push rod is contacted with or separated from the positioning mechanism; a stop block is arranged on the measuring workbench; the bottom of the pressing block is provided with a plurality of positioning notches.

2. The apparatus of claim 1, wherein: the body to be measured is sleeved outside the positioning column; the contact block is abutted against the inner side wall of the bullet to be tested; the contact block is a rectangular block.

3. The apparatus of claim 1, wherein: the first connecting rod is provided with a strip hole; the single side of the strip hole is provided with an opening; one side of the second connecting rod is rotatably connected in the strip hole.

4. A device for measuring the internal diameter of a projectile in accordance with claim 3, wherein: the positioning mechanism comprises a mandril and a wedge-shaped block; guide holes are formed in two sides of the wedge block; the bottom of the positioning column is provided with a guide column; the guide hole is sleeved on the outer side of the guide post.

5. The apparatus of claim 4, wherein: the ejector rod is arranged in the center of the upper surface of the wedge-shaped block; wedge surfaces are arranged on two sides of the wedge block; the upper end of the top rod is contacted with or separated from the bottom of the first connecting rod.

6. The apparatus of claim 5, wherein: the side wall of the positioning column is provided with a through hole relative to the push rod; a return spring is arranged between the pressing block and the side wall of the positioning column; the end of the push rod is contacted with or separated from the wedge block.

7. The apparatus of claim 6, wherein: the positioning notches are uniformly distributed at the bottom of the pressing block; the measuring workbench is provided with a groove; the stop block is connected in the groove through a spring.